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In this paper we present results of an empirical study with about 600 secondary school students from the 11th grade.In the study novices' conceptions of software development, their attitudes towards and self-confidence with computers, as well as their expectations of learning goals and contents of informatics courses were examined.The study indicates that(More)
In this article, we try to create a general, worldwide picture of teachers' opinion about what should be taught in introductory programming courses. We focus on the debate about restructuring CS1. The study explores what teachers believe is important to teach, what they actually teach, and what students find most difficult (according to their teachers).(More)
In which way do computing experiences shape attitudes towards computer science? Why do they foster some students' commitment to the subject while they deter others? By using a qualitative research approach we observed that computing experiences have impacts on several dimensions: They affect the self-image with regard to computing, the world-image with(More)
In an international study, experts reflected on their national state of computer science education in school, and the associated situation and education of computer science teachers. While these situations are shaped by local circumstances, they are also shaped by changes in the discipline. The results of the study showed a number of recurrent themes and(More)
Research shows that examples play an important role for cognitive skill acquisition. Students as well as teachers rank examples as important resources for learning to program. Therefore examples must be consistent with the principles and rules of the topics we are teaching. However, educators often struggle to find or develop objectoriented example(More)
In March 2004, SIGCSE members contributed to a mailing list discussion on the question of whether programming should be taught objects first or imperative first. We analyse that discussion, exploring how the CS community debates the issue and whether contributors' positions are supported by the research literature on novice programmers. We applied four(More)
Recently, the importance of computer science education in secondary schools has been coming more and more into focus. Students' interests and motivation to pursue a career in CS related fields are highly influenced by school. Also beliefs in the nature of CS are influenced, and necessary foundations in knowledge and skills are built. However, a major(More)
In neurons and neurosecretory (nerve) cells, neurite outgrowth requires surface enlargement sustained by exocytosis of specific but poorly characterized vesicles. A canonical, relatively slow form of outgrowth is known to require the v-SNARE Ti-VAMP. Recently, we have identified a new, rapid form, triggered by activation of Rac1 and sustained by the(More)